New X-Men (2004) #1

"CHOOSING SIDES" PART 1 (OF 5) For the young mutants at the Xavier Institute, life will never be the same! The children at the X-Mansion thought they had it tough when Professor X was running things - but now that X-Men Cyclops and Emma Frost have taken over the reins of the school, they're wishing for the simpler times of yesterday! Codenames, school-issued uniforms and mandatory training sessions in the Danger Room are just a few of the changes being implemented around the Institute - but when the entire student body is forced to divide itself up into small squads and "choose sides," Xavier's will never be the same again!